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9th class Biology study materiel(TM)

                         9th class Biology study materiel(TM)



Biology is the natural science that involves the study of life and living organisms, including their 
physical and chemical structure, function, development and evolution.Modern biology is a vast field, 
composed of many branches. Despite the broad scope and the complexity of the science, there are 
certain unifying concepts that consolidate it into a single, coherent field. In general, biology 
recognizes the cell as the basic unit of life, genes as the basic unit of heredity, and evolution as 
the engine that propels the creation of new species. It is also understood that all organisms survive 
by consuming and transforming energy and by regulating their internal environment.
Sub-disciplines of biology are defined by the scale at which life is studied, the kinds of organisms 
studied, and the methods used to study them: biochemistry examines the rudimentary chemistry of life;molecular biology studies the complex interactions among biological molecules; cellular biology 
examines the basic building-block of all life, the cell; physiology examines the physical and 
chemical functions of tissues, organs, and organ systems; ecology examines how organisms interact in their environment; and evolutionary biology examines the processes that produced the diversity of 
life.Pripared by Sri kiran Jangam, SA(BS), West Godavari.
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